The review of costume dramas that can be broadcast on Huadian is extremely strict, and they may be forced to delete many wonderful scenes, so directors are very cautious before sending them to Huadian for discussion.

"Silly, you've helped us so much, of course we'll do everything we can to help you."

"Hehe, Sister Chi is the best."

The sisters were affectionate on this side, and on the other side came the excited voice of Mr. Xu, "I figured it out! I figured it out!"

"Um?"

Guan Miao looked over and saw Mr. Xu handing her a piece of paper full of formulas. Just one glance at it made her dizzy.

"Mr. Xu, I don't know much about this. Please tell me the result directly."

"Right, right, right. The answer is number three! The things required and the research time for number three are relatively simple."

He shook his head and said regretfully, "The global water pollution situation is getting worse and worse. The sooner we can develop this substance, the sooner we can save the world's water and leave more protection for future generations."

"Are you sure it's number three?"

"Sure! Trust me, choose number three."

Seeing that Mr. Xu was so sure, Guan Miao immediately exchanged formula No. 3 with San San.

[Confirm to redeem number 3?]

"confirm."

[good. ]

As it finished speaking, a B5-sized paper appeared in her hand out of thin air. The upper half was filled with densely packed formulas, and the lower half was some precautions.

"Mr. Xu, here you go."

Mr. Xu glanced at her twice, with a hint of gratitude in his eyes. He suddenly bent down and bowed to her very solemnly.

"Mr. Xu!"